I closed the lid. The screen went dark. But the activity light on the WLAN card—the little green LED that had been dead for six months—stayed on. Blinking in a slow, deliberate pattern.
ping 169.254.0.1 -n 1 -w 1000
The problem with the name "802.11n WLAN" is that it could be a Realtek chip, a MediaTek (Ralink) chip, or something else entirely. You need the specific hardware ID. driver 80211n wlan
If your Hardware ID starts with VID_0BDA , you have a Realtek chip. I closed the lid